for anyone that sells on ebay or at yard sales. it started with a student selling textbooks in the u.s. that were purchased overseas. >> the publishers sued for copyright violations. we explain what could happen at the end of the case. >> the case could cause problems for anyone who ever thought about selling an old iphone, donating to charity or having a yard sale. the issue to be argued in front of the supreme court is whether the original copyright owner on u.s. products purchased in other countries can control your ability to resell the product once you buy it. he resells products at this ebay consignment store. >> i would say 95%. >> he is afraid the case could put him out of business. >> i think it is ridiculous. i have known about it because it could affect my business. i have pushed it back. how could this happen? the repercussions would be ridiculous. >> even libraries are worried they could be required to seek the copyright owner's permission before lending books overseas. he represents a coalition of interests including libraries. >> it is simple. you bought it. you own it.